
\begin{center}
\begin{fminipage}[t]{0.45\linewidth}
\begin{center}Input Code Block
\rule{0.75\textwidth}{1pt}
\end{center}
\begin{cudablock}
#include <stdio>
#include <mpi.h>
\end{cudablock} 
\end{fminipage}
\hspace{0.05cm}
\begin{fminipage}[t]{0.45\linewidth}
\begin{center}Output Code Block
\rule{0.75\textwidth}{1pt}
\end{center}
\begin{cudablock}
///// Preproc 
#include <stdio>
#include <mpi.h>
///// *Preproc 
\end{cudablock} 
\end{fminipage}
\end{center}



